Safeguarding human health from climate change impacts is more urgent than ever, yet most countries are not acting fully on their own plans to achieve this, according to the first global snapshot of progress on climate change and health.

The Alliance for Global Water Adaptation (AGWA) and the International Water Management Institute (IWMI) have published a background paper on managing the water-related impacts of climate change. It argues that water is key to effective climate change adaptation.

This paper provides an overview of how economists think about climate change impacts with a focus on Asia. It is designed to discuss the steps along the causal chain from physical impacts to impacts on human and natural systems.

The world is facing an existential threat. But it is also clear that without equity, ambition is not possible. The ongoing CoP25 must not duck this question any further says Centre for Science and Environment in its new position paper "COP 25: What the world must do"

Aviation emissions have been found to cause 5% of global anthropogenic radiative forcing and ~16 000 premature deaths annually due to impaired air quality. When aiming to reduce these impacts, decision makers often face trade-offs between different emission species or impacts in different times and locations.

Most estimates of global mean sea-level rise this century fall below 2 m. This quantity is comparable to the positive vertical bias of the principle digital elevation model (DEM) used to assess global and national population exposures to extreme coastal water levels, NASA’s SRTM. CoastalDEM is a new DEM utilizing neural networks to reduce SRTM error. Here we show – employing CoastalDEM—that 190 M people (150–250 M, 90% CI) currently occupy global land below projected high tide lines for 2100 under low carbon emissions, up from 110 M today, for a median increase of 80 M.

Riven with scientific uncertainty, contending interests, and competing interpretations, the problem of climate change poses an existential challenge. For India, such a challenge is compounded by the immediate concerns of eradicating poverty and accelerating development.

Nigeria’s climate has been changing, evident in: increases in temperature; variable rainfall; rise in sea level and flooding; drought and desertification; land degradation; more frequent extreme weather events; affected fresh water resources and loss of biodiversity.

We argue the need to improve climate change forecasting for ecology, and importantly, how to relate long-term projections to conservation. As an example, we discuss the need for effective management of one species, the emperor penguin, Aptenodyptes forsteri. This species is unique amongst birds in that its breeding habit is critically dependent upon seasonal fast ice. Here, we review its vulnerability to ongoing and projected climate change, given that sea ice is susceptible to changes in winds and temperature.

Ninety scientific institutions led by the South African National Biodiversity Institute have released a shock report that unveils waves of unprecedented climate impacts tearing across South Africa's globally important wild assets.